People always say that baby girls develop faster than baby boys. They tend to walk earlier. They learn to talk earlier and they mature earlier.
Now that I have a boy and a gal of my own, I can indeed see the difference. Incidental or not, I really wouldn't know.
Eryn will be exactly 4 months old tomorrow. This morning, while I was getting ready for work, I heard a huffing and puffing sound from my gal. I turned and saw that she had overturned herself from her back to her tummy! She was struggling to put her hands properly under her so she can push herself up. wow! I think Brendan only did that at almost 6 months old. Eryn also started gurgling and babbling at 2 months. Brendan was very late, in fact, he's not even speaking in sentences yet.
Eryn already know how to find her way to put her thumb into her mouth at around 3 months while Brendan did it much later, after exploring all his fingers and fists before getting to his thumb.
Bottomline : Kids grow up so fast nowadays....